Merge 98392 - LayerRendererChromium::setVisible called needlessly without a visibility change

Source/WebCore/platform/graphics/chromium/cc/CCLayerTreeHostImpl.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 79 matching lines @@
 protected:
     explicit CCLayerTreeHostImpl(const CCSettings&);
     int m_sourceFrameNumber;
     int m_frameNumber;
 
 private:
     OwnPtr<LayerRendererChromium> m_layerRenderer;
     RefPtr<CCLayerImpl> m_rootLayerImpl;
     CCSettings m_settings;
     IntSize m_viewportSize;
+    bool m_visible;
 };
 
 };
 
 #endif